if we connect a resistor to a battery it will be heated
what is not changing among the following
a] electron drift velocity
b] specific resistance
c] resistance
d] density of electrons
Answers
If we connect a resistor to a battery it will be heated and the electron drift velocity would not change.
Explanation:
If we connect a resistor to a battery it will be heated what is not changing among the following
a] electron drift velocity
b] specific resistance
c] resistance
d] density of electrons
If we connect a resistor to a battery it will be heated and the electron drift velocity would not change.
When an electric field is applied to a battery the electrons gain an average velocity known as drift velocity. Electron s in the conductor move randomly with Fermi velocity and it results into an average velocity of zero.
If we connect a resistor to a battery it will be heated d] density of electrons will not change among the following.
Explanation:
Resistance, specific resistance and electron drift velocity varies during the relaxation time due to temperature change but number of electrons always remains constant.
The relaxation time is time interval between two successive collision of the electrons.
When the current 'I' flows:
v = e(E/m)T
Where,
v = Drift velocity
e = Charge of electrons
m = Mass of electron
E = Electric field
T = Relaxation time